Over the past few decades, cyclic metalloporphyrin dimers have been significantly exploited in the fields of molecular motion, switches, recognition, biomimetic chemistry, and nanoreactors. Such cyclic dimeric systems have been enticed particular attention owing to their unique conformational properties. The kind of linker used to hold together the two porphyrin units is responsible to form molecular clefts (with different shapes and sizes) that can bind various guest molecules and control their orientation inside the cavity of the cyclic dimer. Moreover, the presence of different metal ions in the cyclic dimers can tune their properties either as reactive sites or as regulation sites. Therefore depending upon the cavity size, metal ion and the substrate interactions with the host frameworks, various cyclic metalloporphyrin dimers have been developed and successfully utilized for numerous spectacular applications. This review illustrates the recent advancement of such cyclic metalloporphyrin dimers based on their remarkable applications. In addition, this review also highlights various other aspects of the cyclic metalloporphyrin dimers (such as basic conformational features, structural aspects, binding ability towards guests, influence of metals etc) along with their bright future prospects.

在过去的几十年中，环状金属卟啉二聚体已在分子运动，开关，识别，仿生化学和纳米反应器领域得到了广泛应用。这种环状二聚体系统由于其独特的构象性质而引起了特别的注意。用于将两个卟啉单元连接在一起的连接子负责形成分子裂口（具有不同的形状和大小），这些分子裂口可以结合各种来宾分子并控制其在环状二聚体腔内的方向。而且，在环状二聚体中不同金属离子的存在可以将其性质调节为反应性位点或调节位点。因此，取决于型腔的大小，金属离子和底物与主体骨架的相互作用，已经开发出各种环状金属卟啉二聚体，并将其成功用于许多引人注目的应用。这篇综述说明了这种环状金属卟啉二聚体基于其非凡的应用的最新进展。此外，本综述还重点介绍了环状金属卟啉二聚体的其他各个方面（例如基本构象特征，结构方面，对客体的结合能力，金属的影响等）以及它们的光明前景。